One of the essential optimizations for loading speed and interactivity is to defer the loading of JavaScript. Let’s go deeper to understand the impact of a blocking script on loading times, the solutions for minimising the impact, and the pitfalls you want to avoid.
We’ll also take the opportunity to explain the details of the solution we’ve developed: a feature called DeferJS.
Web performance fundamentals: perks of a Content Delivery Network (CDN)
HTTP cache: a pillar of web performance, for improving loading speed and user experience
Caching is one of the most effective techniques for having fast pages and for improving loading speeds by several hundred milliseconds.
This time scale may seem minuscule, but cumulatively, all of those milliseconds can add up to seconds… and 1 extra second of loading time results in fewer conversions. It’s worth noting that in the retail sector, 1 extra second of loading time can make conversions fall by up to -20%.